Answer:

Step-by-step explanation:
we know that
To get the 10% discount, a shopper must spend at least $200
so
Let
d ------> represent the spending (in dollars) of a shopper who gets the discount
therefore
The value of d must be greater than or equal to $200

I am pretty sure the approximate volume is 22 units.
Supplement of an angle is what must be added to that angle to get 180
51+supplement=180
minus 51 both sides
supplement=129
answer is C